package com.cdfahe.gms.web.controller;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Random;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.lang.StringUtils;
import org.codehaus.jackson.map.ObjectMapper;
import org.json.simple.JSONObject;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartFile;
import org.springframework.web.multipart.support.DefaultMultipartHttpServletRequest;

@Controller
public class KindEditorController {

	private static final ObjectMapper objectMapper = new ObjectMapper();
	private  PrintWriter writer = null;
	
	@SuppressWarnings("rawtypes")
	@RequestMapping(value = "/ajaxTest",method =RequestMethod.POST)
	public void ajaxTest(HttpServletRequest  request,
			HttpServletResponse response) throws ServletException, IOException,
			FileUploadException {
		response.setContentType("text/html; charset=UTF-8"); 
		writer = response.getWriter();
		//获取要删除图片的唯一主键id（这里是图片名字）
		String picid = request.getParameter("picid");
		 JSONObject obj = new JSONObject();
		if (StringUtils.isNotEmpty(picid)) {
			String newS = picid.replace("/", "\\").substring(8);
			ServletContext application = request.getSession().getServletContext();
			String savePath = application.getRealPath("/");
			String allPath = savePath + newS;
			System.out.println("allPath"+allPath);
			File delfile = new File(allPath);
			if (delfile.exists()) {
				try {
					 delfile.delete();
					 obj.put("issuc", true);
					 obj.put("info", "删除成功！");
					 writer.println(obj.toJSONString());
					 return;
				} catch (Exception e) {
					e.printStackTrace();
					 obj.put("issuc", false);
					 obj.put("info", "无文件去权限，删除失败！");
					 writer.println(obj.toJSONString());
					return;
				}
			
			}else{
				//文件不存在
				 obj.put("issuc", false);
				 obj.put("info", "要删除的文件不存在，删除失败！");
				 writer.println(obj.toJSONString());
				return;
			}
			
		}
	}
	
	@SuppressWarnings("rawtypes")
	@RequestMapping(value = "/updatefiles",method =RequestMethod.POST)
	public void fileUpload(HttpServletRequest  request,
			HttpServletResponse response) throws ServletException, IOException,
			FileUploadException {
		response.setContentType("text/html; charset=UTF-8"); 
		writer = response.getWriter();
		ServletContext application = request.getSession().getServletContext();
		String savePath = application.getRealPath("/") + "attached/";
//		String savePath = "c://attached/";
		// 文件保存目录URL
		String saveUrl = request.getContextPath() + "/attached/";
		// 定义允许上传的文件扩展名
		HashMap<String, String> extMap = new HashMap<String, String>();
		extMap.put("image", "gif,jpg,jpeg,png,bmp");
		extMap.put("flash", "swf,flv");
		extMap.put("media", "swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb");
		extMap.put("file", "doc,docx,xls,xlsx,ppt,htm,html,txt,zip,rar,gz,bz2,pdf");
		String dirName = request.getParameter("dir");
		if (dirName == null) {
		 dirName = "image";
		}
		//创建文件夹
		savePath += dirName + "/";
		saveUrl += dirName + "/";
		File saveDirFile = new File(savePath);
		if (!saveDirFile.exists()) {
		 saveDirFile.mkdirs();
		}
//		SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
		SimpleDateFormat sdf = new SimpleDateFormat("yyyyMM");
		String ymd = sdf.format(new Date());
		savePath += ymd + "/";
		saveUrl += ymd + "/";
		File dirFile = new File(savePath);
		if (!dirFile.exists()) {
		 dirFile.mkdirs();
		}
		FileItemFactory factory = new DiskFileItemFactory();
		ServletFileUpload upload = new ServletFileUpload(factory);
		upload.setHeaderEncoding("UTF-8");
		List items = upload.parseRequest(request);
		DefaultMultipartHttpServletRequest mrequest= (DefaultMultipartHttpServletRequest)request;
		Map map=mrequest.getFileMap();
		Collection<MultipartFile> c = map.values();
		Iterator it = c.iterator();
		for (; it.hasNext();) {
			CommonsMultipartFile file=(CommonsMultipartFile) it.next();
			if(!file.isEmpty()){
			 long fileSize = file.getSize();
			 String fileName = file.getOriginalFilename();
			 String contentType=file.getContentType();
			 String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();//文件后缀
			 if(fileSize > 1000000){
				 writer.println(getError("上传文件大小超过限制10M。"));
				 return;
			 }
			 if(!Arrays.<String>asList(extMap.get(dirName).split(",")).contains(fileExt)){
				 writer.println(getError("上传文件扩展名是不允许的扩展名。\n只允许" + extMap.get(dirName) + "格式。"));
				 return;
			 }
			 SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
			 String newFileName = df.format(new Date()) + "_" + new Random().nextInt(1000) + "." + fileExt;
			 try{
				  File uploadedFile = new File(savePath, newFileName);
				  file.transferTo(uploadedFile);  
			 }catch(Exception e){
				 writer.println(getError("上传文件失败。"));
				 return;
			 }
			 JSONObject obj = new JSONObject();
			 obj.put("error", 0);
			 obj.put("url", saveUrl + newFileName);
			 obj.put("title", fileName);
			 System.out.println(fileName);
			 writer.println(obj.toJSONString());
			} else {
				writer.println(getError("不可以上传空文件！"));
				return;
			} 
		}
		return;
	}

	private Map<String, Object> getError(String message) {
		Map<String, Object> msg = new HashMap<String, Object>();
		msg.put("error", 1);
		msg.put("message", message);
		return msg;
	}

	@RequestMapping(value = "upFilesManage", method = RequestMethod.GET)
	public void fileManager(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		ServletContext application = request.getSession().getServletContext();
		ServletOutputStream out = response.getOutputStream();
		// 根目录路径，可以指定绝对路径，比如 /var/www/attached/
		String rootPath = application.getRealPath("/") + "attached/";
//		String rootPath = "c://attached/";
		// 根目录URL，可以指定绝对路径，比如 http://www.yoursite.com/attached/
		String rootUrl = request.getContextPath() + "/attached/";
		// 图片扩展名
		String[] fileTypes = new String[] { "gif", "jpg", "jpeg", "png", "bmp" };

		String dirName = request.getParameter("dir");
		if (dirName != null) {
			if (!Arrays.<String> asList(
					new String[] { "image", "flash", "media", "file" })
					.contains(dirName)) {
				out.println("Invalid Directory name.");
				return;
			}
			rootPath += dirName + "/";
			rootUrl += dirName + "/";
			File saveDirFile = new File(rootPath);
			if (!saveDirFile.exists()) {
				saveDirFile.mkdirs();
			}
		}
		// 根据path参数，设置各路径和URL
		String path = request.getParameter("path") != null ? request
				.getParameter("path") : "";
		String currentPath = rootPath + path;
		String currentUrl = rootUrl + path;
		String currentDirPath = path;
		String moveupDirPath = "";
		if (!"".equals(path)) {
			String str = currentDirPath.substring(0,currentDirPath.length() - 1);
			moveupDirPath = str.lastIndexOf("/") >= 0 ? str.substring(0,str.lastIndexOf("/") + 1) : "";
		}

		// 排序形式，name or size or type
		String order = request.getParameter("order") != null ? request.getParameter("order").toLowerCase() : "name";

		// 不允许使用..移动到上一级目录
		if (path.indexOf("..") >= 0) {
			out.println("Access is not allowed.");
			return;
		}
		// 最后一个字符不是/
		if (!"".equals(path) && !path.endsWith("/")) {
			out.println("Parameter is not valid.");
			return;
		}
		// 目录不存在或不是目录
		File currentPathFile = new File(currentPath);
		if (!currentPathFile.isDirectory()) {
			out.println("Directory does not exist.");
			return;
		}
		// 遍历目录取的文件信息
		List<Hashtable> fileList = new ArrayList<Hashtable>();
		if (currentPathFile.listFiles() != null) {
			for (File file : currentPathFile.listFiles()) {
				Hashtable<String, Object> hash = new Hashtable<String, Object>();
				String fileName = file.getName();
				if (file.isDirectory()) {
					hash.put("is_dir", true);
					hash.put("has_file", (file.listFiles() != null));
					hash.put("filesize", 0L);
					hash.put("is_photo", false);
					hash.put("filetype", "");
				} else if (file.isFile()) {
					String fileExt = fileName.substring(
							fileName.lastIndexOf(".") + 1).toLowerCase();
					hash.put("is_dir", false);
					hash.put("has_file", false);
					hash.put("filesize", file.length());
					hash.put("is_photo", Arrays.<String> asList(fileTypes).contains(fileExt));
					hash.put("filetype", fileExt);
				}
				hash.put("filename", fileName);
				hash.put("datetime",new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(file.lastModified()));
				fileList.add(hash);
			}
		}

		if ("size".equals(order)) {
			Collections.sort(fileList, new SizeComparator());
		} else if ("type".equals(order)) {
			Collections.sort(fileList, new TypeComparator());
		} else {
			Collections.sort(fileList, new NameComparator());
		}
		Map<String, Object> msg = new HashMap<String, Object>();
		msg.put("moveup_dir_path", moveupDirPath);
		msg.put("current_dir_path", currentDirPath);
		msg.put("current_url", currentUrl);
		msg.put("total_count", fileList.size());
		msg.put("file_list", fileList);
		response.setContentType("application/json; charset=UTF-8");
		String msgStr = objectMapper.writeValueAsString(msg);
		out.println(msgStr);
	}

	@SuppressWarnings("rawtypes")
	class NameComparator implements Comparator {
		public int compare(Object a, Object b) {
			Hashtable hashA = (Hashtable) a;
			Hashtable hashB = (Hashtable) b;
			if (((Boolean) hashA.get("is_dir"))
					&& !((Boolean) hashB.get("is_dir"))) {
				return -1;
			} else if (!((Boolean) hashA.get("is_dir"))
					&& ((Boolean) hashB.get("is_dir"))) {
				return 1;
			} else {
				return ((String) hashB.get("filename")).compareTo((String) hashA.get("filename"));
			}
		}
	}

	@SuppressWarnings("rawtypes")
	class SizeComparator implements Comparator {
		public int compare(Object a, Object b) {
			Hashtable hashA = (Hashtable) a;
			Hashtable hashB = (Hashtable) b;
			if (((Boolean) hashA.get("is_dir"))
					&& !((Boolean) hashB.get("is_dir"))) {
				return -1;
			} else if (!((Boolean) hashA.get("is_dir"))
					&& ((Boolean) hashB.get("is_dir"))) {
				return 1;
			} else {
				if (((Long) hashA.get("filesize")) > ((Long) hashB
						.get("filesize"))) {
					return 1;
				} else if (((Long) hashA.get("filesize")) < ((Long) hashB
						.get("filesize"))) {
					return -1;
				} else {
					return 0;
				}
			}
		}
	}

	@SuppressWarnings("rawtypes")
	class TypeComparator implements Comparator {
		public int compare(Object a, Object b) {
			Hashtable hashA = (Hashtable) a;
			Hashtable hashB = (Hashtable) b;
			if (((Boolean) hashA.get("is_dir"))
					&& !((Boolean) hashB.get("is_dir"))) {
				return -1;
			} else if (!((Boolean) hashA.get("is_dir"))
					&& ((Boolean) hashB.get("is_dir"))) {
				return 1;
			} else {
				return ((String) hashA.get("filetype"))
						.compareTo((String) hashB.get("filetype"));
			}
		}
	}
}
